pregnancy paranoia.. I need help

hi all. I'm the person who had reposted about "no baby on ultrasound" so many times. I've now accepted that I am suffering from extreme paranoia and anxiety and I need help. does anyone have ideas as to what I could to get help? I'm not crazy. I understand that I can't be pregnant with no baby @ 17 weeks but I feel strange and paranoid. what should I do? please refrain from hurtful comments. this is a hard time for me.